40 CFR § 420.136 - Pretreatment standards for new sources (PSNS).
Except as provided in40 CFR 403.7, any new source subject to this subpart that introduces pollutants into a publicly owned treatment works must comply with 40 CFR part 403 and must achieve the following pretreatment standards for new sources (PSNS):
(a)Direct-reduced iron. [Reserved]
(b)Forging operations. [Reserved]
(c)Briquetting. There shall be no discharge of process wastewater pollutants to POTWs.